If you have a job that requires you to be on your feet most of the day, you've probably cursed your friends and families who lord it over you with their sweet desk jobs, right?

Well, if recent research is anything to go by, your mates with the 'cushy' office jobs are biologically almost a decade older than you due to the fact they're sitting for most of the day.

According to a study published in the American Journal of Epidemiology, researchers established that women who sit for at least ten hours a day and fail to do at least 40 minutes exercise were biologically much older.

Oh, joy.

It has been established that women whose jobs require them to sit from morning until evening have shorter telomeres which are the tiny caps found on the ends of strands of DNA.

These caps. which shorten with age, protect chromosomes from damage meaning that these particular women have a higher risk of disease, and are, from a scientific perspective, eight years older than their counterparts.

"Our study found cells age faster with a sedentary lifestyle. Chronological age doesn’t always match biological age.” lead author, Aladdin Shadyab explained.

The research was conducted across 1,500 women.